EP3200445B1 - Image capture device, vehicle, and fluctuation detecting method - Google Patents
Image capture device, vehicle, and fluctuation detecting method Download PDFInfo
- Publication number
- EP3200445B1 EP3200445B1 EP15844280.6A EP15844280A EP3200445B1 EP 3200445 B1 EP3200445 B1 EP 3200445B1 EP 15844280 A EP15844280 A EP 15844280A EP 3200445 B1 EP3200445 B1 EP 3200445B1
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- European Patent Office
- Prior art keywords
- attachment
- vehicle
- image
- predetermined
- anomaly
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- 238000003384 imaging method Methods 0.000 claims description 67
- 238000001514 detection method Methods 0.000 claims description 6
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- 230000005540 biological transmission Effects 0.000 description 3
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- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/04—Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/004—Arrangements for holding or mounting articles, not otherwise provided for characterised by position outside the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
- B60R2300/307—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing virtually distinguishing relevant parts of a scene from the background of the scene
- B60R2300/308—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing virtually distinguishing relevant parts of a scene from the background of the scene by overlaying the real scene, e.g. through a head-up display on the windscreen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/60—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by monitoring and displaying vehicle exterior scenes from a transformed perspective
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30248—Vehicle exterior or interior
- G06T2207/30252—Vehicle exterior; Vicinity of vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/633—Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera
- H04N23/634—Warning indications
Definitions
- the present disclosure relates to an imaging apparatus that images the surroundings of a car, to a car, and to a fluctuation detection method.
- JP 2014-125029 A JP 2004 001658 A aims at accurately detecting the optical axis deviation of an in-vehicle camera regardless of a place where the vehicle travels.
- the imaging units need to be attached so as not to fluctuate relative to the vehicle.
- the attachment to the vehicle might loosen due to vibration or the like during driving. If attachment to the vehicle loosens, the imaging units may vibrate during driving of the vehicle, and the captured images may blur due to the vibration. As a result of blurring, the accuracy of object recognition processing might degrade.
- an imaging apparatus, a car, and a fluctuation detection method that can determine the existence of at least one of an attachment anomaly in attachment of the imaging unit to the car and an attachment anomaly in attachment of a predetermined fixed object to the car.
- An imaging apparatus includes:
- a vehicle includes: an imaging apparatus comprising an imaging unit configured to capture an image of surroundings of a car, and an image processor configured to detect continuous fluctuation of a predetermined subject appearing in at least one predetermined region that is a portion of an entire region of the image captured by the imaging unit, and to make a determination of whether an attachment anomaly exists in at least one of attachment of the imaging unit to the car and attachment of the predetermined subject to the car based on the continuous fluctuation.
- the present disclosure may also be implemented as methods, programs, or recording media storing programs that substantially correspond to these apparatuses, and such methods, programs, and recording media are to be understood as included in the scope of the present disclosure.
- a fluctuation detection method includes:
- the existence of at least one of an attachment anomaly in attachment of an imaging unit to a car and an attachment anomaly in attachment of a predetermined fixed object to a car can be determined.
- a vehicle 10 that, for example, is a car includes an imaging apparatus 11 and a display apparatus 12. At least an imaging unit of the imaging apparatus 11 is fixed to some location on the vehicle 10 so that an arbitrary fixed object that is fixed to the vehicle 10 is included within an imaging range. In this embodiment, the entire imaging apparatus 11 is fixed to the rear exterior of the vehicle 10 so that a rear garnish 13 and a bumper 14, which are fixed objects fixed to the rear of the vehicle 10, are included in the imaging range.
- the display apparatus 12 is provided at a position visible from the driver's seat.
- the display apparatus 12 may, for example, be the display of a car navigation system.
- the display apparatus 12 displays images acquired from the imaging apparatus 11.
- the imaging apparatus 11 includes an imaging unit 15 and an image processor 16.
- the imaging unit 15 includes an optical system 17 and an image pickup device 18.
- the optical system 17 includes a wide-angle lens, such as a fisheye lens, and forms an image of the surroundings behind the vehicle 10 on a light-receiving surface of the image pickup device 18.
- the image pickup device 18 may, for example, be a CMOS image sensor and a CCD image sensor and captures the image formed on the light-receiving surface.
- the image processor 16 is, for example, a DSP and applies predetermined image processing to the image captured by the imaging unit 15, such as color interpolation, white balance adjustment, contour enhancement, or the like.
- the image processor 16 also performs object recognition on the image and determines whether a contour drawn within the image is a predetermined object targeted for recognition.
- the image processor 16 may be provided in the same housing as the imaging unit 15 or in a separate housing.
- the image processor 16 can detect continuous fluctuation in a predetermined subject. In order to detect continuous fluctuation in a predetermined subject, the image processor 16 extracts a predetermined region that has a predetermined position and size and is a portion of the entire region of the image captured by the imaging unit 15.
- the predetermined region is at least one region that sufficiently allows recognition of an image of a fixed object, such as the rear garnish 13 or the bumper 14.
- the predetermined region is at least one region in the image IM captured by the imaging unit 15, such as the regions UA near the edges at the upper side in the vertical direction and the region LA near the center at the lower side in the vertical direction.
- a region that sufficiently allows recognition of an image of a fixed object refers, for example, to a region such that 20% to 80% of the region is occupied by the image of the fixed object.
- Each predetermined region is defined in advance at the time of manufacturing the imaging apparatus 11. For example, when the specifications of the imaging apparatus 11 stipulate attachment to a particular position on a particular model of car, then the position where the image of a fixed object exists in the captured image is a set position, and a region near this position is defined as a predetermined region.
- the predetermined region may also be defined by either or both of manual input by the user and automatic setting by the image processor 16.
- manual input by the user for example a region in an image displayed on the display apparatus 12 is designated using an input interface of the display apparatus 12 or the like. This region is then defined as a predetermined region.
- automatic setting by the image processor 16 for example among images that are different frames acquired from the imaging unit 15, i.e. images with different capture times, for example a predetermined region for which the image fluctuation, such as fluctuation in the contour position or fluctuation in brightness, is less than a threshold is defined as a predetermined region.
- the image processor 16 detects information related to location of the image of a fixed object appearing as a predetermined subject in the extracted predetermined region.
- the information related to location may, for example, be the edge position of the fixed object, the ratio of area occupied by the image of the fixed object in the predetermined region, or the like.
- the image processor 16 detects information related to location in continuously acquired images of different frames. Based on the information related to location detected in continuously acquired images of different frames, i.e. based on the change over time in the information related to location, the image processor 16 detects continuous fluctuation of a predetermined subject.
- the image processor 16 determines whether at least one of an attachment anomaly in attachment of the imaging unit 15 to the vehicle 10 and an attachment anomaly in attachment of the predetermined subject to the vehicle 10 exists. For example, the image processor 16 determines that an attachment anomaly has occurred when the Fourier transform of the change over time of information related to location has a peak at the frequency of a specific band.
- the image processor 16 determines the site at which an attachment anomaly has occurred based on the region(s) in which an attachment anomaly is determined to have occurred. For example, when determining that an attachment anomaly has occurred in every predetermined region, the image processor 16 determines that an attachment anomaly has occurred in attachment of the imaging unit 15 to the vehicle 10. When determining that an attachment anomaly has occurred in a portion of the predetermined regions, for example, the image processor 16 determines that an attachment anomaly has occurred in attachment, to the vehicle 10, of the predetermined subject whose image is included in the portion of the predetermined regions.
- the image processor 16 overlays the result of the determination of the existence of an attachment anomaly on the image of the surroundings of the vehicle 10, transmits the image to the display apparatus 12, and causes the image to be displayed.
- the image processor 16 executes processing to determine the existence of an attachment anomaly each time one frame image is acquired from the imaging unit 15.
- step S100 the image processor 16 extracts predetermined region(s) from the entire region of the acquired image. Upon extraction of the predetermined region(s), the process proceeds to step S101.
- step S101 the image processor 16 detects information related to the location of a predetermined subject in the predetermined region(s) extracted in step S100.
- step S102 the image processor 16 stores the information related to location detected in step S101 in a working memory of the image processor 16. Upon storage of the information related to location, the process proceeds to step S103.
- step S103 the image processor 16 reads, from the working memory, the information related to location that was stored in the working memory and was detected in frame images during a predetermined time period counting backward from the present. Furthermore, based on the change over time in the read information related to location, the image processor 16 detects continuous fluctuation of a predetermined subject. Upon detection of continuous fluctuation, the process proceeds to step S104.
- step S104 the image processor 16 determines whether an attachment anomaly has occurred in the predetermined region(s) based on the continuous fluctuation of the predetermined subject in the predetermined region(s). Upon a determination that an attachment anomaly has not occurred, the process proceeds to step S105. Conversely, upon a determination that an attachment anomaly has occurred, the process proceeds to step S106.
- step S105 the image processor 16 transmits an image, acquired from the imaging unit 15 and to which predetermined image processing is applied, to the display apparatus 12.
- the image processor 16 then causes the display apparatus 12 to display a regular image, with no warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends.
- step S106 the image processor 16 determines whether continuous fluctuation in a predetermined subject was detected in a plurality of predetermined regions. When continuous fluctuation was detected in only one predetermined region, the process proceeds to step S107. When continuous fluctuation was detected in a plurality of predetermined regions, the process proceeds to step S108.
- step S107 the image processor 16 overlays a warning on an image that is acquired from the imaging unit 15 and to which predetermined image processing is applied.
- the warning indicates that an attachment anomaly in the attachment of the imaging unit 15 or a predetermined subject to the vehicle 10 has occurred.
- the image processor 16 transmits the image with the overlaid warning to the display apparatus 12 and causes the display apparatus 12 to display the image with the overlaid warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends.
- step S108 the image processor 16 detects the site at which an attachment anomaly has occurred based on the predetermined regions in which an attachment anomaly is determined to have occurred.
- the image processor 16 overlays a warning on an image that is acquired from the imaging unit 15 and to which predetermined image processing is applied. The warning indicates that an attachment anomaly has occurred at the detected site of occurrence.
- the image processor 16 transmits the image with the overlaid warning to the display apparatus 12 and causes the display apparatus 12 to display the image with the overlaid warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends.
- the imaging apparatus 11 of this embodiment it can be determined whether an attachment anomaly exists in at least one of attachment of the imaging unit 15 to the vehicle 10 and attachment of a fixed object to the vehicle 10.
- the site at which an attachment anomaly has occurred can also be determined based on continuous fluctuation of the predetermined subject in each of a plurality of predetermined regions.
- the result of the determination is overlaid on the image. Therefore, the driver can be notified of the attachment anomaly when the attachment anomaly occurs.
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Description
- The present disclosure relates to an imaging apparatus that images the surroundings of a car, to a car, and to a fluctuation detection method.
- In order to support driving of a vehicle, such as a car, a camera system that performs object recognition processing on images captured by imaging units mounted in the vehicle has been proposed (see
JP 2014-125029 A - PTL 1:
JP 2014-125029 A
JP 2004 001658 A - In PTL 1, the imaging units need to be attached so as not to fluctuate relative to the vehicle. The attachment to the vehicle, however, might loosen due to vibration or the like during driving. If attachment to the vehicle loosens, the imaging units may vibrate during driving of the vehicle, and the captured images may blur due to the vibration. As a result of blurring, the accuracy of object recognition processing might degrade.
- Therefore, it would be helpful to provide an imaging apparatus, a car, and a fluctuation detection method that can determine the existence of at least one of an attachment anomaly in attachment of the imaging unit to the car and an attachment anomaly in attachment of a predetermined fixed object to the car.
- An imaging apparatus according to claim 1 includes:
- an imaging unit configured to capture an image of surroundings of a car; and
- an image processor configured to detect continuous fluctuation of a predetermined subject appearing in at least one predetermined region that is a portion of an entire region of the image captured by the imaging unit, and to make a determination of whether an attachment anomaly exists in at least one of attachment of the imaging unit to the car and attachment of the predetermined subject to the car based on the continuous fluctuation.
- A vehicle according to claim 7 includes: an imaging apparatus comprising an imaging unit configured to capture an image of surroundings of a car, and an image processor configured to detect continuous fluctuation of a predetermined subject appearing in at least one predetermined region that is a portion of an entire region of the image captured by the imaging unit, and to make a determination of whether an attachment anomaly exists in at least one of attachment of the imaging unit to the car and attachment of the predetermined subject to the car based on the continuous fluctuation.
- While the solution to the problem in the present disclosure has been described above in terms of apparatuses, the present disclosure may also be implemented as methods, programs, or recording media storing programs that substantially correspond to these apparatuses, and such methods, programs, and recording media are to be understood as included in the scope of the present disclosure.
- For example, a fluctuation detection method according to claim 8 includes:
- capturing an image of surroundings of a car;
- detecting continuous fluctuation of a predetermined subject appearing in at least one predetermined region that is a portion of an entire region of the image that is captured; and
- making a determination of whether an attachment anomaly exists in at least one of attachment of an imaging unit to the car and attachment of the predetermined subject to the car based on the continuous fluctuation, the imaging unit capturing an image of surroundings of the car.
- According to the aforementioned imaging apparatus, car, and fluctuation detection method, the existence of at least one of an attachment anomaly in attachment of an imaging unit to a car and an attachment anomaly in attachment of a predetermined fixed object to a car can be determined.
- In the accompanying drawings:
-
FIG. 1 is a layout drawing illustrating the layout of an imaging apparatus and display apparatus in a vehicle in which an imaging apparatus according to one of the embodiments of the present disclosure is mounted; -
FIG. 2 is a block diagram schematically illustrating the structure of the imaging apparatus inFIG. 1 along with the display apparatus; -
FIG. 3 illustrates predetermined regions in the image captured by the imaging unit inFIG. 1 ; and -
FIG. 4 is a flowchart illustrating processing executed by the image processor inFIG. 2 to determine the existence of an attachment anomaly. - With reference to the drawings, the following describes embodiments of the present disclosure in detail.
- As illustrated in
FIG. 1 , avehicle 10 that, for example, is a car includes animaging apparatus 11 and adisplay apparatus 12. At least an imaging unit of theimaging apparatus 11 is fixed to some location on thevehicle 10 so that an arbitrary fixed object that is fixed to thevehicle 10 is included within an imaging range. In this embodiment, theentire imaging apparatus 11 is fixed to the rear exterior of thevehicle 10 so that arear garnish 13 and abumper 14, which are fixed objects fixed to the rear of thevehicle 10, are included in the imaging range. Thedisplay apparatus 12 is provided at a position visible from the driver's seat. Thedisplay apparatus 12 may, for example, be the display of a car navigation system. Thedisplay apparatus 12 displays images acquired from theimaging apparatus 11. - Next, the configuration of the
imaging apparatus 11 is described. As illustrated inFIG. 2 , theimaging apparatus 11 includes animaging unit 15 and animage processor 16. - The
imaging unit 15 includes anoptical system 17 and animage pickup device 18. Theoptical system 17 includes a wide-angle lens, such as a fisheye lens, and forms an image of the surroundings behind thevehicle 10 on a light-receiving surface of theimage pickup device 18. Theimage pickup device 18 may, for example, be a CMOS image sensor and a CCD image sensor and captures the image formed on the light-receiving surface. - The
image processor 16 is, for example, a DSP and applies predetermined image processing to the image captured by theimaging unit 15, such as color interpolation, white balance adjustment, contour enhancement, or the like. Theimage processor 16 also performs object recognition on the image and determines whether a contour drawn within the image is a predetermined object targeted for recognition. Theimage processor 16 may be provided in the same housing as theimaging unit 15 or in a separate housing. - The
image processor 16 can detect continuous fluctuation in a predetermined subject. In order to detect continuous fluctuation in a predetermined subject, theimage processor 16 extracts a predetermined region that has a predetermined position and size and is a portion of the entire region of the image captured by theimaging unit 15. The predetermined region is at least one region that sufficiently allows recognition of an image of a fixed object, such as therear garnish 13 or thebumper 14. For example, as illustrated inFIG. 3 , the predetermined region is at least one region in the image IM captured by theimaging unit 15, such as the regions UA near the edges at the upper side in the vertical direction and the region LA near the center at the lower side in the vertical direction. A region that sufficiently allows recognition of an image of a fixed object refers, for example, to a region such that 20% to 80% of the region is occupied by the image of the fixed object. - Each predetermined region is defined in advance at the time of manufacturing the
imaging apparatus 11. For example, when the specifications of theimaging apparatus 11 stipulate attachment to a particular position on a particular model of car, then the position where the image of a fixed object exists in the captured image is a set position, and a region near this position is defined as a predetermined region. - The predetermined region may also be defined by either or both of manual input by the user and automatic setting by the
image processor 16. During manual input by the user, for example a region in an image displayed on thedisplay apparatus 12 is designated using an input interface of thedisplay apparatus 12 or the like. This region is then defined as a predetermined region. During automatic setting by theimage processor 16, for example among images that are different frames acquired from theimaging unit 15, i.e. images with different capture times, for example a predetermined region for which the image fluctuation, such as fluctuation in the contour position or fluctuation in brightness, is less than a threshold is defined as a predetermined region. - The
image processor 16 detects information related to location of the image of a fixed object appearing as a predetermined subject in the extracted predetermined region. The information related to location may, for example, be the edge position of the fixed object, the ratio of area occupied by the image of the fixed object in the predetermined region, or the like. Theimage processor 16 detects information related to location in continuously acquired images of different frames. Based on the information related to location detected in continuously acquired images of different frames, i.e. based on the change over time in the information related to location, theimage processor 16 detects continuous fluctuation of a predetermined subject. - Furthermore, based on the detected continuous fluctuation, the
image processor 16 determines whether at least one of an attachment anomaly in attachment of theimaging unit 15 to thevehicle 10 and an attachment anomaly in attachment of the predetermined subject to thevehicle 10 exists. For example, theimage processor 16 determines that an attachment anomaly has occurred when the Fourier transform of the change over time of information related to location has a peak at the frequency of a specific band. - When there is a plurality of predetermined regions in which consecutive fluctuation of a predetermined subject is detected, the
image processor 16 determines the site at which an attachment anomaly has occurred based on the region(s) in which an attachment anomaly is determined to have occurred. For example, when determining that an attachment anomaly has occurred in every predetermined region, theimage processor 16 determines that an attachment anomaly has occurred in attachment of theimaging unit 15 to thevehicle 10. When determining that an attachment anomaly has occurred in a portion of the predetermined regions, for example, theimage processor 16 determines that an attachment anomaly has occurred in attachment, to thevehicle 10, of the predetermined subject whose image is included in the portion of the predetermined regions. - The
image processor 16 overlays the result of the determination of the existence of an attachment anomaly on the image of the surroundings of thevehicle 10, transmits the image to thedisplay apparatus 12, and causes the image to be displayed. - Next, the processing executed by the
image processor 16 in this embodiment to determine the existence of an attachment anomaly is described with reference toFIG. 4 . Theimage processor 16 executes processing to determine the existence of an attachment anomaly each time one frame image is acquired from theimaging unit 15. - In step S100, the
image processor 16 extracts predetermined region(s) from the entire region of the acquired image. Upon extraction of the predetermined region(s), the process proceeds to step S101. - In step S101, the
image processor 16 detects information related to the location of a predetermined subject in the predetermined region(s) extracted in step S100. - In step S102, the
image processor 16 stores the information related to location detected in step S101 in a working memory of theimage processor 16. Upon storage of the information related to location, the process proceeds to step S103. - In step S103, the
image processor 16 reads, from the working memory, the information related to location that was stored in the working memory and was detected in frame images during a predetermined time period counting backward from the present. Furthermore, based on the change over time in the read information related to location, theimage processor 16 detects continuous fluctuation of a predetermined subject. Upon detection of continuous fluctuation, the process proceeds to step S104. - In step S104, the
image processor 16 determines whether an attachment anomaly has occurred in the predetermined region(s) based on the continuous fluctuation of the predetermined subject in the predetermined region(s). Upon a determination that an attachment anomaly has not occurred, the process proceeds to step S105. Conversely, upon a determination that an attachment anomaly has occurred, the process proceeds to step S106. - In step S105, the
image processor 16 transmits an image, acquired from theimaging unit 15 and to which predetermined image processing is applied, to thedisplay apparatus 12. Theimage processor 16 then causes thedisplay apparatus 12 to display a regular image, with no warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends. - In step S106, the
image processor 16 determines whether continuous fluctuation in a predetermined subject was detected in a plurality of predetermined regions. When continuous fluctuation was detected in only one predetermined region, the process proceeds to step S107. When continuous fluctuation was detected in a plurality of predetermined regions, the process proceeds to step S108. - In step S107, the
image processor 16 overlays a warning on an image that is acquired from theimaging unit 15 and to which predetermined image processing is applied. The warning indicates that an attachment anomaly in the attachment of theimaging unit 15 or a predetermined subject to thevehicle 10 has occurred. Next, theimage processor 16 transmits the image with the overlaid warning to thedisplay apparatus 12 and causes thedisplay apparatus 12 to display the image with the overlaid warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends. - In step S108, the
image processor 16 detects the site at which an attachment anomaly has occurred based on the predetermined regions in which an attachment anomaly is determined to have occurred. Next, theimage processor 16 overlays a warning on an image that is acquired from theimaging unit 15 and to which predetermined image processing is applied. The warning indicates that an attachment anomaly has occurred at the detected site of occurrence. Furthermore, theimage processor 16 transmits the image with the overlaid warning to thedisplay apparatus 12 and causes thedisplay apparatus 12 to display the image with the overlaid warning of an attachment anomaly. After image transmission, the processing to determine the existence of an attachment anomaly ends. - According to the
imaging apparatus 11 of this embodiment with the above configuration, it can be determined whether an attachment anomaly exists in at least one of attachment of theimaging unit 15 to thevehicle 10 and attachment of a fixed object to thevehicle 10. - According to the
imaging apparatus 11 of this embodiment, the site at which an attachment anomaly has occurred can also be determined based on continuous fluctuation of the predetermined subject in each of a plurality of predetermined regions. - According to the
imaging apparatus 11 of this embodiment, the result of the determination is overlaid on the image. Therefore, the driver can be notified of the attachment anomaly when the attachment anomaly occurs. - The present disclosure is based on the drawings and on embodiments, yet it should be noted that a person of ordinary skill in the art could easily make a variety of modifications and adjustments based on the present disclosure. Therefore, the scope of the invention is limited only by the appended claims.
-
- 10
- Vehicle
- 11
- Imaging apparatus
- 12
- Display apparatus
- 13
- Rear garnish
- 14
- Bumper
- 15
- Imaging unit
- 16
- Image processor
- 17
- Optical system
- 18
- Image pickup device
- IM
- Image
- LA
- Region near center at lower side in vertical direction
- UA
- Region near edges at upper side in vertical direction
Claims (8)
- An imaging apparatus (11) comprising:an imaging unit (15) configured to be fixed to a vehicle (10) and configured to capture an image of surroundings of the vehicle (10); andan image processor (16) configured to detect continuous fluctuation of a predetermined subject attached to the vehicle (10) appearing in at least one predetermined region of the image captured by the imaging unit (15), and to make a determination of whether an attachment anomaly exists in at least one of attachment of the imaging unit (15) to the vehicle (10) and attachment of the predetermined subject to the vehicle (10) based on the continuous fluctuation,characterized in thatthe at least one predetermined region comprises a plurality of predetermined regions; andthe image processor (16) is configured to determine whether the attachment anomaly has occurred in attachment of the imaging unit (15) to the vehicle (10) or in attachment of the predetermined subject to the vehicle (10) based on the continuous fluctuation of the predetermined subject appearing in each of the plurality of predetermined regions.
- The imaging apparatus (11) of claim 1, wherein the image processor (16) detects the continuous fluctuation based on at least one of an edge position of the predetermined subject in the predetermined region and area occupied by the predetermined subject in the predetermined region.
- The imaging apparatus (11) of claim 1 or claim 2, wherein the image processor (16) overlays a display of a result of the determination on the image.
- The imaging apparatus (11) of claim 1, wherein the image processor (16) is configured to determine that an attachment anomaly has occurred when the Fourier transform of the change over time of information related to the predetermined subject appearing in the predetermined region has a peak in a specific frequency band.
- The imaging apparatus (11) of claim 1, wherein the image processor (16) is configured to set the predetermined region as a region for which image fluctuation in a plurality of images with different capture times is less than a threshold.
- The imaging apparatus (11) of claim 5, wherein the image fluctuation is a fluctuation in a contour position or a fluctuation in brightness.
- A vehicle (10) comprising:
the imaging apparatus (11) according to claim 1. - A computer-implemented fluctuation detection method comprising:capturing an image of surroundings of a vehicle (10);detecting continuous fluctuation of a predetermined subject attached to the vehicle (10) appearing in at least one predetermined region of the image that is captured, wherein the at least one predetermined region comprises a plurality of predetermined regions;determining whether an attachment anomaly exists in at least one of attachment of an imaging unit (15) to the vehicle (10) and attachment of the predetermined subject to the vehicle (10) based on the continuous fluctuation, the imaging unit (15) capturing an image of surroundings of the vehicle (10); anddetermining whether the attachment anomaly has occurred in attachment of the imaging unit (15) to the vehicle (10) or in attachment of the predetermined subject to the vehicle (10) based on the continuous fluctuation of the predetermined subject appearing in each of the plurality of predetermined regions.
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JP2014196933 | 2014-09-26 | ||
PCT/JP2015/004894 WO2016047150A1 (en) | 2014-09-26 | 2015-09-25 | Image capture device, vehicle, and fluctuation detecting method |
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EP3200445A1 EP3200445A1 (en) | 2017-08-02 |
EP3200445A4 EP3200445A4 (en) | 2018-06-06 |
EP3200445B1 true EP3200445B1 (en) | 2020-07-29 |
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EP (1) | EP3200445B1 (en) |
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FR3074343B1 (en) * | 2017-11-30 | 2020-02-28 | Sncf Reseau | METHOD AND SYSTEM FOR DETECTING DEFECTS IN GEOMETRY OF A RAILWAY |
US10607092B2 (en) * | 2018-01-25 | 2020-03-31 | GM Global Technology Operations LLC | System and method for detecting the position of a tailgate and adjusting operation of a user interface device based on the tailgate position |
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JP4045862B2 (en) * | 2002-06-03 | 2008-02-13 | 日産自動車株式会社 | Optical axis deviation detection device for in-vehicle camera |
JP2004173037A (en) * | 2002-11-21 | 2004-06-17 | Kyocera Corp | Optical-axis deviation detecting apparatus of vehicle-mounted camera |
EP2214403B1 (en) * | 2007-12-03 | 2012-07-25 | Panasonic Corporation | Image processing device, photographing device, reproducing device, integrated circuit, and image processing method |
JP2013066046A (en) * | 2011-09-16 | 2013-04-11 | Hitachi Kokusai Electric Inc | Imaging device |
JP6022930B2 (en) | 2012-12-25 | 2016-11-09 | 京セラ株式会社 | Camera system, camera module, and camera control method |
JP6364797B2 (en) * | 2014-02-06 | 2018-08-01 | 株式会社デンソー | Image analysis apparatus and image analysis method |
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- 2015-09-25 WO PCT/JP2015/004894 patent/WO2016047150A1/en active Application Filing
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EP3200445A4 (en) | 2018-06-06 |
US10242460B2 (en) | 2019-03-26 |
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JP6326144B2 (en) | 2018-05-16 |
JPWO2016047150A1 (en) | 2017-05-25 |
US20170297505A1 (en) | 2017-10-19 |
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